Copy Entry Types

$sectionHandle = 'character';
$entryTypeHandle = 'character';

$newEntryTypeHandle = 'newType3';
$newEntryTypeName = 'A new Type3';

/** @var Section $section */
$section = Craft::$app->getSections()->getSectionByHandle($sectionHandle);
$entryTypes = $section->getEntryTypes();
$entryType = ArrayHelper::filterByValue($entryTypes, 'handle', $entryTypeHandle);
if(\count($entryType) === 1){
    /** @var EntryType $entryType */
    $entryType = $entryType[0];
    $newEntryType = new EntryType([
        'sectionId' => $entryType->sectionId,
        'handle' => $newEntryTypeHandle,
        'name' => $newEntryTypeName
    ]);
    $oldLayout = $entryType->getFieldLayout();
    $fieldLayout = new FieldLayout([
        'tabs' => $oldLayout->getTabs(),
        'fields' => $oldLayout->getFields(),
        'type'  => $oldLayout->type
    ]);

    if(!Craft::$app->getFields()->saveLayout($fieldLayout)){
        die('Couldn`t save layout');
    }
    echo 'new layout ID ' . $fieldLayout->id . '<br>';
    $newEntryType->setFieldLayout($fieldLayout);
    $success = Craft::$app->getSections()->saveEntryType($newEntryType);
    echo "<pre>";
    var_dump($success);
    var_dump($newEntryType->getErrors());
    echo "</pre>";
    die();
}
die('no entry type found');